1. Jerome Lipper Multiple Myeloma Center, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA;
2. Discovery and Preclinical Research Division, TAIHO Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan;
3. Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA;
4. Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA;
5. Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA; and
6. Harvard School of Public Health, Boston, MA